Through-wall electrical conductor support



1956 J. F. SMUL 2,758,152

THROUGH-WALL. ELECTRICAL CONDUCTOR SUPPORT Filed Aug. 21, 1952 F; G 3 JNVENTOR.

WIT W WJM United States Patent THROUGH-WALL ELECTRICAL CONDUCTOR SUPPORT Joseph F. Smul, Milwaukee, Wis.

Application August 21, 1952, Serial No. 305,529

2 Claims. (Cl. 174153) The invention relates to electrical conductor supports and more particularly to a support for carrying an electrical conductor, such as an antenna conductor for television or radio apparatus, through the outside Wall of a building.

The general object of the invention is to provide a through a wall electrical conductor support which is simple and may be easily installed by the drilling of a small hole through the outside wall of a building and the clamping of the support to the wall by a water-tight joint connection. More particularly, the device comprises a tube of insulating material for receiving and supporting the conductor and having a threaded portion upon which clamping nuts and washers, one of which washers is of yieldable water repellant material, are mounted, said nuts and waashers engaging opposite sides of the wall through which the tube passes to clamp it in position in moisture-sealed relation with said wall.

The invention further consists in the several features hereinafter described and more particularly defined by claims at the conclusion hereof.

In the drawings:

Fig. 1 is a diagrammatic view showing an antenna wire mounting arrangement including conductor supports embodying the invention;

Fig. 2 is a detailed vertical sectional view of conductor support embodying the invention;

Fig. 3 is a detailed horizontal sectional view taken on the line 3-3 of Fig. 2;

Fig. 4 is a detailed vertical sectional view showing certain modifications.

Referring to Fig. l of the drawing, the numeral 5 designates a house or other building having a mast 6 carrying radio wave collector arms 7, the sets of arms at one side of the mast being connected in known manner to the two lead wires of the antenna conductor 9. The conductor 9 is connected to the conductor support of this invention at the roof 10, passes down at 11 through the attic 12 and out through another conductor support of the invention and then downwardly adjacent the side 13 of the house to and through the desired window opening (not shown) where the television or radio apparatus is located.

Referring to Figs. 3 to 4, the conductor support includes a tube 14 of plastic or other suitable electrical insulating material having a cap 15 of similar material secured to and covering the upper open end thereof. The tube 14 has a thread 16 which is formed by a pipe thread die so that the upper end portion 17 of this thread is a tapered thread which makes a weather-tight connection with a nut 18, of metal or hard plastic. The threaded end of the tube extends through a hole 19 drilled through the outside wall of a building such as the roof or a side wall. For waterproofing this hole 19 and also for clamping the tube to, this wall, washers 20 and 21 of metal or plastic, a nut 22 of metal or plastic, and a washer 23 Fatented Aug. 7, 1956 of sponge rubber or soft rubber composition or other suitable yieldable waterproof material are provided.

The washer 20 abuts the nut 13 and the upper side of the washer 23 whose underside abuts the outer surface of the building wall. The other washer 21 abuts the inner side of the building wall and the nut 22. The nut 18 forms a stop shoulder or flange on the tube 14 and could be formed integral with the tube, if desired. With the washers 20 and 23 assembled on the tube the lower end is passed through the hole 19 and the Washer 21 and nut 22 then are run up the tube and the nut 22 then turned to draw the washer 23 and the washer 21 into clamping engagement with opposite sides of the wall, and with the washer 23 put under compression to form a water-tight seal with the outer side Wall.

The antenna conductor 9 is clamped to the upper or outer end of the tube 14 by the cap 15, the tube preferably having a flat surface 24 formed thereon against which the conductor abuts and is clamped by the cap. The cap may be held to the tube and clamped to the conductor in any suitable manner, and when the cap is of hard or relatively hard plastic, a set screw 25 in threaded engagement with the cap and bearing on the tube as shown in Figs. 2 and 3 may be used.

The preferred form of cap, however, is that shown in Fig. 4 and is of rubber or rubber composition which has a tight fit over the open end of the tube, and due to its own resiliency requires no separate means for bolding on the tube and firmly holding the antenna against the flat surface 24 of said tube.

It will be noted that the antenna conductor is looped over the outer end of the tube 14 and extends through this tube.

I desire it to be understood that this invention is not to be limited to any particular form or arrangement of parts except in so far as such limitations are included in the appended claims.

What I claim as my invention is:

1. An antenna conductor support for carrying an antenna conductor through an opening in the outer wall of a building comprising a hollow tube of insulating material having a threaded portion adapted to extend through said opening and a flat at its upper end, a cap of yieldable material for clamping the conductor between it and said flat, said cap removably connected to the outer end of said tube for clamping a portion of the antenna conductor extendable through said tube to said tube, the thread of said threaded portion tapering from the lower end of said tube, a nut mounted on the outer end of said threaded portion in fluid-tight engagement therewith, a washer means including a washer of yieldable material disposed between said nut and the outer side of said wall surrounding said opening, a clamping nut on the lower end of said tube, and a washer interposed between said clamping nut and the inner side of said outer wall.

2. The conductor support as defined in claim 1 wherein the washer of yieldable material is sponge rubber.

References Cited in the file of this patent UNITED STATES PATENTS 1,678,054 Buckley July 24, 1928 1,759,997 Piepep May 27, 1930 2,337,781 Stoker Dec. 28, 1943' 2,552,686 Melcher May 15, 1951 2,666,805 Smith Jan. 19, 1954 FOREIGN PATENTS 45,023 Norway Apr. 2, 1928 

